Secondary-side synchronous driver and controller supports isolated flyback converters operating in discontinuous or border conduction mode. The device accepts a 4.5 V to 36 V input supply and regulates a 7 V gate-drive rail for logic-level and standard synchronous rectifier MOSFETs. Peak gate-drive capability is 2 A source and 4 A sink with typical propagation delays below 40 ns. Programmable minimum off-time and turn-off trip point help manage transformer parasitic ringing. The 6-lead thin SOT-23 package operates over a -40 °C to +125 °C temperature range.
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| Function | Secondary-side synchronous MOSFET driver and controller |
| Topology | Isolated flyback |
| Operating mode | Discontinuous Conduction Mode or Border Conduction Mode |
| Input voltage range | 4.5 to 36V |
| Maximum drain operating voltage | 60V |
| VDRV regulation voltage | 7.0 typV |
| Quiescent current | 320 typ, 450 maxµA |
| Switching current | 600 typµA |
| Gate peak source current | 2A |
| Gate peak sink current | 4A |
| Gate output pullup resistance | 1.5 typ, 2.8 maxΩ |
| Gate output pulldown resistance | 0.5 typ, 0.9 maxΩ |
| Turn-on propagation delay | 26 typ, 40 maxns |
| Turn-off propagation delay | 32 typ, 50 maxns |
| Programmable minimum off-time range | 115 to 1550ns |
| Minimum on-time | 150 min, 240 typ, 330 maxns |
| Operating temperature range | -40 to +125°C |
| Package | 6-lead thin SOT-23, package code Z6+1 |
| RoHS | + suffix package is lead (Pb)-free/RoHS-compliant |
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